Home / 11,590.78-17,385.90-6,656.80

Finding the Fourth Proportional to 11,590.78, 17,385.90 and 6,656.80

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Solution

The fourth proportional to 11,590.78, 17,385.90 and 6,656.80 is: 9,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,590.78 : 17,385.90 = 6,656.80 : x
  2. Step 2: Convert to fraction form
    11,590.78/17,385.90 = 6,656.80/x
  3. Step 3: Cross multiply
    11,590.78x = 17,385.90 × 6,656.80
  4. Step 4: Simplify right side
    11,590.78x = 115,734,459.12
  5. Step 5: Solve for x
    x = 115,734,459.12/11,590.78
  6. Step 6: Final answer
    x = 9,985.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.